Is This Guy Cheating in Call of Duty&colon; Advanced Warfare&quest;

FinalBossGames posted on YouTube yesterday and has reported That_canadienguy for cheating while playing COD: Advanced Warfare in multiplayer Hardcore Domination on PS4. The best evidence I see in the video of That_canadienguy could be cheating is between 23-40 seconds. Between that time That_canadienguy takes 2 indirect hits from a grenade launcher followed by multiple headshots. After taking what would seem like enough damage to kill him, he still ends up killing FinalBossGames who is playing as Frankie78. Lag could have something to do with this but it all seems fairly fishy to me.

So what do you think, is That_Canadienguy cheating or is it just sour grapes?